
Is Diamondback Energy (FANG) stock Halal?
Verdict for Diamondback Energy (FANG): not Shariah compliant (FAIL). Screened October 2026 under AAOIFI Shariah Standard No. 21. Business activity: pass. Non-permissible income: fail. Interest-bearing investments: pass. Interest-bearing debt: pass. Preference shares: pass. Dividend purification factor: not applicable. Next review: November 2026.
Diamondback Energy is an independent energy company primarily focused on the exploration, development, and production of oil and natural gas. Headquartered in Midland, Texas, the company’s core operations center on unconventional, onshore reserves in the Permian Basin, a region recognized for its abundant hydrocarbon resources. Diamondback Energy’s activities span both upstream operations, which involve extracting oil and gas from the ground, and midstream services, supporting infrastructure in the Midland and Delaware sub-basins. For Muslim investors, though, the most pressing question is simpler: is Diamondback Energy a Halal investment?
Is Diamondback Energy Shariah compliant?
No. In the October 2026 screening Diamondback Energy (FANG) does not pass AAOIFI screening: it fails the non-permissible income screen. Extracting and selling oil, gas or materials is a permissible business, so companies like Diamondback Energy rarely stumble on the activity screen. The pressure point is capital structure: energy is a capital hungry industry that borrows heavily, and AAOIFI Shariah Standard No. 21 caps interest bearing debt at 30% of market capitalisation, a line that moves as commodity cycles move the share price.
Does Diamondback Energy pass the business activity test?
The activity screen is only part of the picture this month: Diamondback Energy currently fails the non-permissible income screen, so the overall verdict is not compliant regardless of the business itself. The activity itself, extracting and selling resources, raises no Shariah objection; the scrutiny belongs to the financing.
Is Diamondback Energy's income Halal?
No. Diamondback Energy's income from impermissible sources currently exceeds AAOIFI's 5% revenue ceiling, which makes the stock non-compliant on this screen regardless of the others. The screen is reassessed monthly, so the status can change when new financial statements arrive.
Does Diamondback Energy meet AAOIFI's debt and investment ratio requirements?
Yes. Both caps hold this month: interest bearing investments and interest bearing debt each stay below 30% of market capitalisation, measured against a market capitalisation of $51.7B (market data as of 1 October 2026). Because the caps move with the share price, our Shariah Supervisory Board has FANG re-screened every month, and the result above always shows the latest verdict.
Why do other halal screeners show a different verdict for Diamondback Energy?
Screeners can disagree without either being wrong. AAOIFI Shariah Standard No. 21, which Tabadulat applies, measures interest bearing debt and investments against market capitalisation with a 30% ceiling. MSCI and FTSE measure them against total assets with a 33% ceiling, and S&P and Dow Jones Islamic use a multi year average of market capitalisation. Data dates differ too, because each provider reads filings and prices on its own schedule. The same company can therefore pass one standard and fail another in the same month. Tabadulat publishes one answer, the AAOIFI result as of October 2026, and re-screens it every month.
Tabadulat is an ADGM regulated brokerage whose license covers Shari'a Compliant Regulated Activities, as the FSRA permission names them. New to the terminology? Gharar and Maysir, Sukuk, Zakat and purification are all explained in plain English.
New to the screening method? Read AAOIFI Standards Explained: What Makes a Stock Halal?











